my fear of needles

Ever since I was young I have been afraid of needles.  My grandfather was a doctor and my father was always worried about my health.  Sometimes my mom would take me to a doctor and then later my father would take me to my grandfather.  So I felt like I was always going to the doctor.  One time with my grandfather he gave me a bunch of shots, I guess they were vaccinations.  My arm hurt so bad that I didn't want to straighten it, and it kept hurting for days.  I remember playing a baseball game and holding the bat with only one arm.  Our team lost that game, definitely.  Whenever I see a needle, and especially when I see someone get an injection on TV or in a movie, I have to close my eyes because I feel sick.  I can picture the needle inside of my, moving around in my blood.  It feels very similar to being in a car that is about to crash.  So, actually getting poked with a needle is still very frightening to me.  I always have to warn my doctor if he wants to take my blood or give me a shot.  I say something like "I'm afraid of needles, so I might pass out."  Needles are disgusting.  I'm also afraid that they are not clean.   If someone pokes me with a dirty needle, I could get a terrible disease and die.  My skin is closed for a reason, things should not go inside of me, including needles. I really hate needles.